easy / easy compact / easy split electronic digital thermostats with defrost control User manual NO POWER & SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT! Integrated Control Solutions & Energy Savings
ENG WARNINGS WARNINGS NO POWER & SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT! CAREL bases the development of its products on decades of experience in HVAC, on the continuous investments in technological innovations to products, procedures and strict quality processes with in-circuit and functional testing on 100% of its products, and on the most innovative production technology available on the market.
ENG Content 1. INTRODUCTION 7 1.1 Main characteristics ............................................................................................7 1.2 Models .......................................................................................................................7 1.3 Main differences between easy, easy compact and easy split ......9 1.4 NTC and PTC probes .........................................................................................9 1.5 Accessories.............................
ENG 1. INTRODUCTION easy, easy compact and easy split are electronic microprocessor controllers with LED display, developed for the management of refrigerating units, display cabinets and showcases. They exploit the experience and the success of the previous PJ32 range, with the objective of offering a product that is simpler and more economical. The structure of the parameters has been enhanced with new functions for more dynamic and effective management of the temperature control and defrost.
ENG X and Y models (PJEZX*, PJEZY*) These are designed for the management of static units operating at low temperature (that is, below 0ºC), which require active defrost using electric heaters or the injection of hot gas. The PJEZ(Y,X)*, in fact, as well as working as a thermometer and a thermostat (like the PJEZS), also manages the defrost actuator. The frequency and duration of the defrost can be set.
ENG 1.3 Main differences between easy, easy compact and easy split Unlike the easy and easy compact models, the easy split models feature a separate terminal and power board. There are also other differences, such as the auxiliary multifunction relay for managing the light output or a second compressor, and new software functions. The table below highlights the differences and indicates the page showing the related explanation.
ENG 2. ASSEMBLY AND INSTALLATION the same time with the screwdriver so that the catch moves back. Do not unscrew too much, the head of the screw must not be raised from the surface of the front panel (phase 2); • repeat the same operation for the top screw (phase 2); • apply the front frame (phase 3). 2.
ENG The voltage supplied to these terminals (see the wiring diagrams) must correspond, within the specified tolerances, to the value shown on the instrument connection label. The insulation of the instrument, for versions with mains power supply (230 Vac and 115 Vac), is reinforced. The versions with 12 Vac/Vdc power supply, on the other hand, do not feature such insulation. 2.
ENG easy compact wiring diagrams PJEZS***E** PJEZS***0** PJEZS***1** NTC PROBES NTC PROBES 1 2 L 3 PROG. SERIAL KEY CONV 4 5 1 6 N 2 L N NTC PROBES L 2 PROG. SERIAL KEY CONV 3 4 NTC PROBES 1 5 N L 12V~ 3 4 N PJEZM*P*E** NTC PROBES 2 3 2 12V~ PJEZM*P*0** PJEZM*P*1** 1 5 PJEZM*N*E** PJEZM*N*0** PJEZM*N*1** 1 4 3 PROG. SERIAL KEY CONV 4 5 NTC PROBES 1 6 AUX 2 3 3 4 AUX L N L N Fig. 2.f easy split wiring diagram (*) 24A Fig. 2.
ENG 2.3 Wiring diagram for multiple units The RS485 converter (IROPZ485S0) is used to connect the easy, easy compact and easy split instruments to the supervisor network, allowing complete control and monitoring of the easy units connected. The system allows up to 207 units to be connected together, with a maximum length of 1000 m. The connection requires the standard accessories (RS485-USB converter, CAREL code CVSTDUMOR0) and two 120 Ω terminal resistors.
ENG 3. USER INTERFACE AND START UP 3.1 easy 3.2 easy compact Display Display 1 1 7 2 2 3 4 5 Fig. 3.c 6 but. no. 1 2 Fig. 3.a but. no.
ENG 3.3 easy split 3.4 Preliminary configurations Once the electrical connections have been completed, simply power-up the controller to make it operative. CAREL then recommends to check that the display does not show any alarm signals (see par. “5.1 Table of alarms and signals” on page 31), then set the time and date (in the models fitted with RTC, see par. “4.11 Clock and time band parameters” page. 28), and finally set the parameters as desired.
ENG Warnings: • when first connected, easy is already on and ready to be used; • the instrument can be switched on from a supervisor PC and via an external contact (setting A4= 5). The latter has priority over the other modes. Set point setting (desired temperature value) The easy, easy compact and easy split devices control the desired temperature (set point) inside the cabinet or cold room directly and dynamically.
ENG 4. FUNCTIONS AND PARAMETERS This chapter describes all the functions of the easy, easy compact and easy split. See Table 1.b for the compatibility of the functions with the model used.
ENG /6: disable decimal point Used to enable or disable the temperature display with the resolution to the tenths of a degree between -20 and + 20 (easy and easy split) or -10 and +10 (easy compact). /6= 0 temperature displayed to the tenth of a degree; /6=1 temperature displayed without the tenths of a degree. r4: night-time set point delta Value that automatically increases the set point temperature during the night-time operation time bands.
ENG Duty setting and defrost If the control probe error occurs when the controller is in defrost mode, the function is not stopped but rather is completed as required; in addition, the defrost can still be performed when called. During the defrost, the duty setting timer is not stopped but rather keeps counting the ON and OFF times. c2/c3 minimum compressor off/on time These determine the minimum off time (c2) and on time (c3) for the compressor.
ENG The defrost may be called, but not activated, in the following cases: • continuous cycle; • dripping (dd>0); • post-dripping ( Fd>0); • compressor protectors; • off status; • disabling from digital input(A4=2); • setting the time delay (d5>0) for the defrost function when the instrument is switched on (d4=1); • direct control mode only without defrost (r3=1) or reverse (r3=2) (in this case the defrost is not called); • defrost by temperature (d0=0, 1) and temperature measured by the defrost probe above
ENG In the event of defrost probe failure, the controller performs a timed defrost with a duration equal to the value set for “dP”. The same is true if the end defrost set point can not be reached, the defrost is stopped after a maximum time equal to the value of dP, and the error Ed is displayed (if enabled by A8) and stays on until a correct defrost cycle is performed.
ENG dC: time base Used to modify the unit of measure used to count the times for parameters dI (defrost interval) and dP (defrost duration). The following values are available: dC 0 1 dI hours minutes AH: absolute or relative temperature for high temperature alarm Determines the activation threshold of the high temperature alarm. dP minutes seconds Table 4.g AH High temperature alarm (normal) if... absolute relative temp. probe 1 ≥ AH Temp. probe 1 ≥ St + AH High temperature alarm (night-time) if...
ENG A4=0 multifunction input disabled The multifunction input is not activated and cannot be used as a digital or analogue input. A4=1 2 3 external alarm contact open= alarm detected contact closed= normal operation. dP (1) unit 1 When A4=1 easy can be connected to an external contact for immediately signalling alarms. The alarm signal can be delayed by setting parameter A7. unit 2 The activation of the alarm brings about a message on the display ((see par. “5.
ENG A4=8 Door switch with evaporator fan and compressor off contact open= door open contact closed= door closed A4= 11: Product probe 3rd input (terminal 11) configured as product probe The input is used in analogue mode for probe 3 (product). See A4=7 with the addition of shutting down the compressor during the pre-alarm (A7 or d8). Enabling the digital input A4=8 has priority over the compressor protection parameters (c0, c1, c2, c3). See paragraph 4.9 “Door open/closed management“.
ENG A4=5, 6 see A4=5, 6 for easy, easy compact in previous paragraph. AE: Dirty condenser alarm differential temperature Sets the temperature value for determining the dirty condenser prealarm “cht” interval (see parameter A4=10 for easy, easy compact and A4=13 for easy split). A4=7 Door switch with evaporator fan off and light not managed See A4=7 for easy, easy compact in previous paragraph. In easy split models with light output configured (H1=4), the status of the light output remains unchanged.
ENG Ado = 0: display case Closing the door the first time: the controller maintains the previous status: • the fans and/or compressor (see parameter ‘A4’) remain off; • the light is kept on if an output is configured as the light output (H1 = 4); • the temperature and the alarm icon (bell) flash; • the high temperature alarms remains disabled.
ENG 4.10 Evaporator fan management parameters CP ON OFF The fan is activated based on the parameter settings and the status of the controller. The evaporator fan control temperature is measured by probe 2, (connector 10). To know which output is associated with the fan, see the wiring diagram for the “easy” model used (see par. “2.2 Electrical connections” page 11). t ON FAN OFF t F4 Important: these parameters are not available in the compact models.
ENG 4.11 Clock and time band parameters Parameters for setting up to 4 defrost time bands The RTC (Real Time Clock), not available on the easy compact models, is used to manage the defrost function, curtain switch/night-time operation and AUX output in real time. The user can enable/disable the clock and set the current time using dedicated parameters. In particular, up to 4 time bands can be set for managing the defrosts, one band for managing night-time operation and one for activating the AUX output.
ENG 4.12 Rapid parameter set selection (EZY) AMB_T The easy, easy compact and easy split controllers feature the EZY parameter (on the compact models, this is called EY), which is used to quickly choose a list of parameters, with corresponding values, for the control of the refrigeration system. By setting parameter EZY=1, 2, 3, 4, one of the 4 lists made up of a maximum of 25 parameters (for the lists see par. “5.9 Table of EZY parameter sets” page 36).
ENG Note: example 2 REQ1 • in mode H1= 1/2, the alarms that act on the AUX output are: “LO”, “HI”, ON “E0”, “IA”, “CHT”; • mode H1= 1 is useful for signalling an alarm when a power failure OFF occurs t ON REQ2 H2: enable keypad Used to prevent the set point and the other operating parameters from being changed when the instrument is located in a place that is accessible to the public. OFF t CP1 ON H2= 0 OFF t CP2 ON OFF t H2=1 H2=2 Fig. 4.
ENG 5. TABLES OF ALARMS AND PARAMETERS 5.1 Table of alarms and signals Note: in easy split controllers, when starting control (powering up the controller and/or switching from OFF status), the high temperature alarm signal is disabled until the first time the compressor stops, to avoid false signals. The first time the compressor stops indicates that the set temperature has been reached, and, consequently, the high temperature alarm signal is enabled. This function is always active.
ENG EF displayed during operation or on power-up operating parameter reading error. See Data errors.
ENG 5.6 Table of easy parameters Par. Description Type Min Max UOM. Def. Parameter visible in models PS /2 /4 /5 /6 /7 /C1 /C2 /C3 password probe measurement stability select probe displayed select °C/°F disable decimal point enable probe 2 alarm (model M only) probe 1 offset probe 2 offset probe 3 offset F C F C C C F F F 0 1 1 0(°C) 0 0 -50.0 -50.0 -50.0 200 15 3 1(°F) 1 1 50.0 50.0 50.
ENG Par. Description Type Min Max UOM. Def. Parameter visible in models AFd AFh AFM dAY hr Min AUX time band OFF day AUX time band OFF hours AUX time band OFF minutes RTC day of the week RTC hours RTC minutes C C C C C C 11 23 59 7 23 59 days h min days h min 0 0 0 1 0 0 X, Y, C (*) X, Y, C (*) X, Y, C (*) X, Y, C (*) X, Y, C (*) X, Y, C (*) 0 0 0 1 0 0 Table 5.c (*) Parameters not visible in models without RTC 5.7 Table of easy compact parameters Par.
ENG 5.8 Table of easy split parameters Par. PS /2 /3 /4 /5 /6 /C1 /C2 /C3 /P Description password probe measurement stability probe display rate select probe displayed select °C/°F disable decimal point probe 1 offset probe 2 offset probe 3 offset select type of probe Type F C C F C C F F F C Min 0 1 0 1 0 0 -50 -50 -50 0 Max 200 15 15 3 1 1 50 50 50 1 UOM (°C/°F) (°C/°F) (°C/°F) - Def.
ENG Par.
ENG easy compact parameter sets (EY) Par. /4 /5 rd r1 r2 r3 c1 c2 d0 dI dt dP d6 dC A0 AL AH Ad Key: EY= 1 2 3 4 Description EY=1 1 0 3.0 -10.0 15.0 1 3 2 2 6 5.0 40 1 0 2.0 20.0 20.
ENG 5.10 Troubleshooting The following table shows a number of anomalous situations that may occur on the various models.
ENG 6. TECHNICAL SPECIFICATIONS 6.1 easy technical specifications 6.2 easy compact technical specifications power supply (*) 230 Vac +10 /-15% 50/60 Hz; 115 Vac +10 /-15% 50/60 Hz 12 Vac 10/-15 %, 50/60 Hz class 2 12 Vdc (11…16 Vdc) class 2 rated power 1.5 VA inputs (*) NTC or PTC probes, 1 or 3 inputs. Digital input as alternative to third probe relay outputs (*) 2 HP relay UL: 12 A Res. 12 FLA 72 LRA, 240 Vac (***) UL: 12 A Res.
ENG 6.3 easy split technical specifications power supply (*) 230 Vac +10/-15%, 50/60 Hz; 115 Vac +10/-15%, 50/60 Hz power input (controller only) 7 VA: 30 mA~ at 230 Vac; 7 VA: 60 mA~ at 115Vac inputs 2 probe inputs, NTC (-50T90°C) or HT NTC(-40T150°C); 1 digital input as alternative to third probe relay outputs (***) RL1: EN60730-1: 12(10)A 250Vac 100000 cycles, UL: 16A Res. 16FLA 96LRA 250Vac (**) 30000 cycles RL4: EN60730-1: 12(10)A 250Vac 100000 cycles, UL: 12A Res.
ENG 6.4 Electromagnetic compatibility The easy and easy compact series is compliant with the EU standards on electromagnetic compatibility: • for household appliances EN 55014-2 and EN 55014-1; • for residential, commercial and light industrial environments EN 50082-1 and EN 50081-1; • for industrial environments EN 50082-2 and EN 50082-1; • as regards safety, the devices are compliant with standards EN60730-1 and EN60730-2-9. 41 easy/easy compact/easy split +030220791 - rel. 3.2 - 13.07.
Notes
CAREL reserves the right to modify the features of its products without prior notice. CAREL INDUSTRIES - HQs Via dell’Industria, 11 - 35020 Brugine - Padova (Italy) Tel. (+39) 049.9716611 - Fax (+39) 049.9716600 e-mail: carel@carel.com - www.carel.com easy/easy compact/easy split +030220791 - rel. 3.2 - 13.07.
